Break of Structure

Key idea

A break of structure (BOS) happens when price closes beyond the most recent relevant swing high or low, confirming the existing trend is still in control. It is different from a liquidity probe, where price pokes beyond a level intrabar and immediately reverses — a probe with no close beyond the level is not a confirmed break.

How to apply it

• Identify the most recent swing high (in an uptrend) or swing low (in a downtrend) that needs to be broken for continuation.
• Wait for a candle close beyond that level, not just an intrabar wick through it.
• Check volume/participation on the breaking candle — thin, low-conviction breaks fail more often.
• Distinguish a BOS (continuation) from a change of character (potential reversal) by checking which direction the swing sequence was already moving.

Example

In an uptrend, price pulls back, holds a higher low, then closes above the prior swing high on strong volume — that's a break of structure confirming the uptrend. A wick that pokes above the same high and immediately reverses back below it is a probe, not a break.

Checklist

• I identified the specific swing level that needs to break
• I waited for a close beyond the level, not just a wick
• I checked volume or participation on the breaking candle
• I distinguished this from a possible change of character

Common mistakes

• Treating any wick beyond a level as a confirmed break
• Trading the break before the candle closes
• Ignoring low volume/participation on a supposed breakout
• Confusing a break of structure with a full trend reversal